CAJ | 학술논문

燃气流量可控的固体火箭冲压发动机促进了其燃气流量控制系统的研究.模型研究是控制系统设计的基础.基于集中参数的思想建立了燃气流量可控的固体火箭冲压发动机动态模型,分析了固体火箭冲压发动机动态模型参数的物理意义及其工作过程中的变参数特性, 固体火箭冲压发动机动态响应时间由冷区容积时间常数、热区容积时间常数、激波传播时间常数和激波容积时间常数等组成, 工作条件的较大变化使得固体火箭冲压发动机在工作过程中具有较强的变参数特性.最后对固体火箭冲压发动机动态模型进行模型降阶,由频率分析的结果可知,模型降阶是合理的.
연기류량가공적고체화전충압발동궤촉진료기연기류량공제계통적연구.모형연구시공제계통설계적기출.기우집중삼수적사상건립료연기류량가공적고체화전충압발동궤동태모형,분석료고체화전충압발동궤동태모형삼수적물리의의급기공작과정중적변삼수특성, 고체화전충압발동궤동태향응시간유랭구용적시간상수、열구용적시간상수、격파전파시간상수화격파용적시간상수등조성, 공작조건적교대변화사득고체화전충압발동궤재공작과정중구유교강적변삼수특성.최후대고체화전충압발동궤동태모형진행모형강계,유빈솔분석적결과가지,모형강계시합리적.
The development of controllable flow solid ducted rocket promote the study on control system of solid ducted rocket. The control model is the foundation of the control system design. Based on the lumped parameter conception, a dynamic model of the controllable flow solid ducted rocket is established. The physical meaning of model parameters and the parameter variation characteristics of solid ducted rocket are analyzed. The dynamical response time of solid ducted rocket consistes of the cold volume time, the hot volume time, the shock propagation time and the shock volume time. The wide working conditions make solid ducted rocket possess strong parameter variation characteristics. Finally model reduction order is performed,and the frequency analysis results show that the model reduction order is reasonable.